(Chron) When a business sells merchandise or services to customers, it must charge a price higher than the cost of goods or labor in order to earn a profit. The markup of cost is the percentage of an item's wholesale cost that the retailer includes in its retail cost to make a profit.
(Harvard Business Review) Businesses need to make investments to grow — that’s a given. But how do you know which investments are likely to be worthwhile? There are a variety of ways to calculate a return on investment (ROI) — net present value, internal rate of return, breakeven — but the simplest is payback period.